@wordpress/editor/src/components/post-publish-button/post-publish-button-or-toggle.js

Enhanced block editor for WordPress posts.

/**
 * WordPress dependencies
 */
import { useViewportMatch } from '@wordpress/compose';
import { useDispatch, useSelect } from '@wordpress/data';

/**
 * Internal dependencies
 */
import PostPublishButton from './index';
import { store as editorStore } from '../../store';
import { ATTACHMENT_POST_TYPE } from '../../store/constants';

const IS_TOGGLE = 'toggle';
const IS_BUTTON = 'button';

export default function PostPublishButtonOrToggle( {
	forceIsDirty,
	setEntitiesSavedStatesCallback,
} ) {
	let component;
	const isSmallerThanMediumViewport = useViewportMatch( 'medium', '<' );
	const { togglePublishSidebar } = useDispatch( editorStore );
	const {
		hasPublishAction,
		isBeingScheduled,
		isPending,
		isPublished,
		isPublishSidebarEnabled,
		isPublishSidebarOpened,
		isScheduled,
		postStatus,
		postStatusHasChanged,
		postType,
	} = useSelect( ( select ) => {
		return {
			hasPublishAction:
				!! select( editorStore ).getCurrentPost()?._links?.[
					'wp:action-publish'
				],
			isBeingScheduled:
				select( editorStore ).isEditedPostBeingScheduled(),
			isPending: select( editorStore ).isCurrentPostPending(),
			isPublished: select( editorStore ).isCurrentPostPublished(),
			isPublishSidebarEnabled:
				select( editorStore ).isPublishSidebarEnabled(),
			isPublishSidebarOpened:
				select( editorStore ).isPublishSidebarOpened(),
			isScheduled: select( editorStore ).isCurrentPostScheduled(),
			postStatus:
				select( editorStore ).getEditedPostAttribute( 'status' ),
			postStatusHasChanged: select( editorStore ).getPostEdits()?.status,
			postType: select( editorStore ).getCurrentPostType(),
		};
	}, [] );

	/**
	 * Conditions to show a BUTTON (publish directly) or a TOGGLE (open publish sidebar):
	 *
	 * 1) Attachments always show a BUTTON since they don't have a publish workflow
	 *    and should save directly without pre-publish checks.
	 *
	 * 2) We want to show a BUTTON when the post status is at the _final stage_
	 *    for a particular role (see https://wordpress.org/documentation/article/post-status/):
	 *
	 * - is published
	 * - post status has changed explicitly to something different than 'future' or 'publish'
	 * - is scheduled to be published
	 * - is pending and can't be published (but only for viewports >= medium).
	 * 	 Originally, we considered showing a button for pending posts that couldn't be published
	 * 	 (for example, for an author with the contributor role). Some languages can have
	 * 	 long translations for "Submit for review", so given the lack of UI real estate available
	 * 	 we decided to take into account the viewport in that case.
	 *  	 See: https://github.com/WordPress/gutenberg/issues/10475
	 *
	 * 3) Then, in small viewports, we'll show a TOGGLE.
	 *
	 * 4) Finally, we'll use the publish sidebar status to decide:
	 *
	 * - if it is enabled, we show a TOGGLE
	 * - if it is disabled, we show a BUTTON
	 */
	if ( postType === ATTACHMENT_POST_TYPE ) {
		component = IS_BUTTON;
	} else if (
		isPublished ||
		( postStatusHasChanged &&
			! [ 'future', 'publish' ].includes( postStatus ) ) ||
		( isScheduled && isBeingScheduled ) ||
		( isPending && ! hasPublishAction && ! isSmallerThanMediumViewport )
	) {
		component = IS_BUTTON;
	} else if ( isSmallerThanMediumViewport || isPublishSidebarEnabled ) {
		component = IS_TOGGLE;
	} else {
		component = IS_BUTTON;
	}

	return (
		<PostPublishButton
			forceIsDirty={ forceIsDirty }
			isOpen={ isPublishSidebarOpened }
			isToggle={ component === IS_TOGGLE }
			onToggle={ togglePublishSidebar }
			setEntitiesSavedStatesCallback={ setEntitiesSavedStatesCallback }
		/>
	);
}